GB2034945B - Digital frequency divider - Google Patents

Digital frequency divider

Info

Publication number
GB2034945B
GB2034945B GB7939300A GB7939300A GB2034945B GB 2034945 B GB2034945 B GB 2034945B GB 7939300 A GB7939300 A GB 7939300A GB 7939300 A GB7939300 A GB 7939300A GB 2034945 B GB2034945 B GB 2034945B
Authority
GB
United Kingdom
Prior art keywords
frequency
digital frequency
divider
frequency divider
exclusive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB7939300A
Other versions
GB2034945A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6054869&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2034945(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB2034945A publication Critical patent/GB2034945A/en
Application granted granted Critical
Publication of GB2034945B publication Critical patent/GB2034945B/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses
    • H03K23/662—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses by adding or suppressing pulses
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/06—Arrangements for supplying the carrier waves ; Arrangements for supplying synchronisation signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Manipulation Of Pulses (AREA)
  • Color Television Systems (AREA)
  • Amplifiers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A digital frequency divider, for producing an output signal related in frequency to an input signal by the ratio less than unity Z/N, incorporates an exclusive-OR gate and three frequency dividers having divisors m, n and k. The fraction Z/N is realized where n and k are integers, and the divisor m is chosen by: <IMAGE> When m is not an integral number, its corresponding divider is embodied by a cascaded divider circuit made up of two or more cascaded units each including an exclusive-OR gate and at least two frequency dividers connected to yield a fractional divisor.
GB7939300A 1978-11-16 1979-11-13 Digital frequency divider Expired GB2034945B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2849797A DE2849797C2 (en) 1978-11-16 1978-11-16 Digital frequency divider arrangement

Publications (2)

Publication Number Publication Date
GB2034945A GB2034945A (en) 1980-06-11
GB2034945B true GB2034945B (en) 1983-09-07

Family

ID=6054869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7939300A Expired GB2034945B (en) 1978-11-16 1979-11-13 Digital frequency divider

Country Status (12)

Country Link
US (1) US4318046A (en)
EP (1) EP0011164B1 (en)
JP (1) JPS5568740A (en)
AT (1) ATE2707T1 (en)
BR (1) BR7907366A (en)
DE (1) DE2849797C2 (en)
DK (1) DK484379A (en)
GB (1) GB2034945B (en)
IN (1) IN152229B (en)
MX (1) MX148581A (en)
NO (1) NO153355C (en)
YU (1) YU278779A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111269B (en) * 1981-11-25 1986-04-09 Plessey Co Plc Adjustable ratio divider
GB2138186A (en) * 1983-04-08 1984-10-17 Philips Electronic Associated Pulse train divider arrangement
DE3324506A1 (en) * 1983-07-07 1985-01-17 Telefunken Fernseh Und Rundfunk Gmbh, 3000 Hannover Frequency divider with odd-numbered divider ratio
US4555793A (en) * 1983-11-28 1985-11-26 Allied Corporation Averaging non-integer frequency division apparatus
SE445868B (en) * 1984-12-12 1986-07-21 Ellemtel Utvecklings Ab DEVICE FOR DIVIDING A CLOCK RATE
US4630294A (en) * 1985-07-17 1986-12-16 Rca Corporation Digital sample rate reduction system
DE3632232A1 (en) * 1986-09-23 1988-04-07 Siemens Ag Arrangement for multiplying a frequency by a fraction
US4991188A (en) * 1988-12-12 1991-02-05 Ncr Corporation Digital frequency divider
US5040197A (en) * 1990-03-09 1991-08-13 Codex Corp. Fractional frequency divider for providing a symmetrical output signal
DE102019126041A1 (en) 2019-09-26 2019-12-24 FEV Group GmbH Assistance system for a vehicle with a transmission frequency generated under the influence of an externally generated frequency

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1450072A (en) * 1972-10-02 1976-09-22 Citizen Watch Co Ltd Electronic timepiece
DE2400394C3 (en) * 1974-01-05 1981-09-03 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for digital frequency division
US3906374A (en) * 1974-03-12 1975-09-16 Nasa Symmetrical odd-modulus frequency divider
IT1022043B (en) * 1974-06-06 1978-03-20 Sits Soc It Telecom Siemens SYMMETRIC DIVIDER OF FREQUENCY FOR AN ODD NUMBER K
DE2523131A1 (en) * 1975-05-24 1976-12-02 Licentia Gmbh CIRCUIT FOR MULTIPLICATION OF THE FREQUENCY OF A VOLTAGE, IN PARTICULAR FOR A PAL CODER IN A COLOR TV
US4041403A (en) * 1975-07-28 1977-08-09 Bell Telephone Laboratories, Incorporated Divide-by-N/2 frequency division arrangement
JPS53143549U (en) * 1977-04-18 1978-11-13
DE2742184C2 (en) * 1977-09-20 1983-09-22 Philips Patentverwaltung Gmbh, 2000 Hamburg Circuit arrangement for generating a switching signal corresponding to the line frequency of a television signal
DE2753398C2 (en) * 1977-11-30 1980-01-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method for digital frequency division
DE2753453C2 (en) * 1977-11-30 1982-01-28 Siemens AG, 1000 Berlin und 8000 München Digital frequency divider

Also Published As

Publication number Publication date
JPS5568740A (en) 1980-05-23
YU278779A (en) 1982-06-30
NO153355B (en) 1985-11-18
BR7907366A (en) 1980-07-22
DK484379A (en) 1980-05-17
MX148581A (en) 1983-05-11
DE2849797C2 (en) 1982-03-11
EP0011164A1 (en) 1980-05-28
US4318046A (en) 1982-03-02
GB2034945A (en) 1980-06-11
IN152229B (en) 1983-11-26
ATE2707T1 (en) 1983-03-15
NO153355C (en) 1986-02-26
DE2849797A1 (en) 1980-05-22
JPS6111491B2 (en) 1986-04-03
EP0011164B1 (en) 1983-03-02
NO793660L (en) 1980-05-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee